WO2013114093A3 - Multi-stage pump with transverse wall - Google Patents

Multi-stage pump with transverse wall Download PDF

Info

Publication number
WO2013114093A3
WO2013114093A3 PCT/GB2013/050188 GB2013050188W WO2013114093A3 WO 2013114093 A3 WO2013114093 A3 WO 2013114093A3 GB 2013050188 W GB2013050188 W GB 2013050188W WO 2013114093 A3 WO2013114093 A3 WO 2013114093A3
Authority
WO
WIPO (PCT)
Prior art keywords
stator
stages
stage
inter
pumping
Prior art date
Application number
PCT/GB2013/050188
Other languages
French (fr)
Other versions
WO2013114093A2 (en
Inventor
Malcolm William Gray
Paul David Neller
Neil Turner
Jack Raymond Tattersall
Original Assignee
Edwards Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edwards Ltd filed Critical Edwards Ltd
Priority to CN201380007075.6A priority Critical patent/CN104126053A/en
Priority to EP13703637.2A priority patent/EP2809880A2/en
Priority to JP2014555306A priority patent/JP2015509165A/en
Priority to US14/374,771 priority patent/US20150037187A1/en
Priority to KR1020147021166A priority patent/KR20140119711A/en
Publication of WO2013114093A2 publication Critical patent/WO2013114093A2/en
Publication of WO2013114093A3 publication Critical patent/WO2013114093A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F04C23/003—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle having complementary function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/123—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/70—Disassembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/80—Repairing methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/85—Methods for improvement by repair or exchange of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Abstract

The present disclosure relates to a multi-stage vacuum pump (10) which has a plurality of pumping stages (12, 14, 16, 18). The pump comprises a stator forming the pumping chambers (32, 34, 36, 38) of respective pumping stages and at least one shaft (40, 42) for supporting a plurality of rotors (44a, 44b; 46a, 46b; 48a, 48b; 50a, 50b) for rotation in respective pumping chambers. The stator comprises: a one-piece stator envelope (20) which extends over an axial extent of a plurality of stator stages thereby circumscribing said at least one shaft and forming an internal profile of a plurality of stator stages: and a plurality of transverse walls (22, 24, 26, 28, 30) located on either axial side of the stator stages to form respective said pumping chambers. At least one of the transverse walls is an inter-stage (26, 28, 30) between stator stages and the stator envelope is configured to circumscribe the inter-stage for location of said inter-stage radially inward of the stator part.
PCT/GB2013/050188 2012-01-30 2013-01-29 Pump WO2013114093A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201380007075.6A CN104126053A (en) 2012-01-30 2013-01-29 Multi-stage vacuum pump with transverse wall
EP13703637.2A EP2809880A2 (en) 2012-01-30 2013-01-29 Multi-stage pump with transverse wall
JP2014555306A JP2015509165A (en) 2012-01-30 2013-01-29 pump
US14/374,771 US20150037187A1 (en) 2012-01-30 2013-01-29 Pump
KR1020147021166A KR20140119711A (en) 2012-01-30 2013-01-29 Multi-stage pump with transverse wall

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1201555.8A GB2498807A (en) 2012-01-30 2012-01-30 Multi-stage vacuum pump with solid stator
GB1201555.8 2012-01-30

Publications (2)

Publication Number Publication Date
WO2013114093A2 WO2013114093A2 (en) 2013-08-08
WO2013114093A3 true WO2013114093A3 (en) 2014-01-30

Family

ID=45876315

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/050188 WO2013114093A2 (en) 2012-01-30 2013-01-29 Pump

Country Status (8)

Country Link
US (1) US20150037187A1 (en)
EP (1) EP2809880A2 (en)
JP (1) JP2015509165A (en)
KR (1) KR20140119711A (en)
CN (1) CN104126053A (en)
GB (1) GB2498807A (en)
TW (1) TW201341663A (en)
WO (1) WO2013114093A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065040B1 (en) * 2017-04-07 2019-06-21 Pfeiffer Vacuum PUMPING GROUP AND USE
GB2564381B (en) * 2017-06-12 2020-07-01 Edwards Ltd Twin shaft pumps and a method of pumping
FR3087504B1 (en) * 2018-10-17 2020-10-30 Pfeiffer Vacuum PROCESS FOR CONTROLLING THE TEMPERATURE OF A VACUUM PUMP, VACUUM PUMP AND ASSOCIATED INSTALLATION
JP7390384B2 (en) * 2019-02-06 2023-12-01 アテリエ ビスク ソシエテ アノニム Multistage pump including multistage pump body and application
FR3096096B1 (en) * 2019-05-13 2021-05-14 Pfeiffer Vacuum Dry primary vacuum pump
CN110500275B (en) * 2019-09-23 2021-03-16 兑通真空技术(上海)有限公司 Pump housing structure of triaxial multistage roots pump
GB2592030B (en) * 2020-02-12 2022-03-09 Edwards Ltd Multiple stage vacuum pump
FR3107933B1 (en) * 2020-03-04 2022-03-04 Pfeiffer Vacuum Tech Ag Dry vacuum pump and method of manufacture
CN111644823A (en) * 2020-06-18 2020-09-11 北京通嘉鼎元科技有限公司 Rotor and machining method thereof, pump body assembly and machining method thereof and vacuum pump
CN111664091B (en) * 2020-06-18 2022-05-10 北京通嘉宏瑞科技有限公司 Integrated rotor and machining method thereof, pump body assembly and vacuum pump
CN111664092B (en) * 2020-06-18 2022-05-10 北京通嘉宏瑞科技有限公司 Machining method of stator main body, pump body assembly and assembling method thereof and vacuum pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002221164A (en) * 2001-01-29 2002-08-09 Kazuo Inaba Movable vane type rotating device
DE102005053921A1 (en) * 2004-12-03 2006-06-08 Hitachi, Ltd. Tandem trochoid pump and method of mounting the same
US20060228246A1 (en) * 2005-04-11 2006-10-12 Ritchie Engineering Company, Inc. Vacuum pump
DE102009045574A1 (en) * 2009-10-12 2011-04-14 Robert Bosch Gmbh Two internal gear pump
GB2475254A (en) * 2009-11-11 2011-05-18 Edwards Ltd Vacuum pump with additional leakage path for back leakage

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JPS5320106A (en) * 1976-08-09 1978-02-24 Tokico Ltd Positive displacement rotary machine
US4259045A (en) * 1978-11-24 1981-03-31 Kayabakogyokabushikikaisha Gear pump or motor units with sleeve coupling for shafts
GB8808608D0 (en) * 1988-04-12 1988-05-11 Boc Group Plc Dry pump with booster
JP2645574B2 (en) * 1988-10-07 1997-08-25 株式会社宇野澤組鐵工所 Multi-stage vacuum pump
GB9021780D0 (en) 1990-10-06 1990-11-21 Boc Group Plc Improvements in mechanical pumps
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002221164A (en) * 2001-01-29 2002-08-09 Kazuo Inaba Movable vane type rotating device
DE102005053921A1 (en) * 2004-12-03 2006-06-08 Hitachi, Ltd. Tandem trochoid pump and method of mounting the same
US20060228246A1 (en) * 2005-04-11 2006-10-12 Ritchie Engineering Company, Inc. Vacuum pump
DE102009045574A1 (en) * 2009-10-12 2011-04-14 Robert Bosch Gmbh Two internal gear pump
GB2475254A (en) * 2009-11-11 2011-05-18 Edwards Ltd Vacuum pump with additional leakage path for back leakage

Also Published As

Publication number Publication date
TW201341663A (en) 2013-10-16
WO2013114093A2 (en) 2013-08-08
CN104126053A (en) 2014-10-29
KR20140119711A (en) 2014-10-10
JP2015509165A (en) 2015-03-26
GB201201555D0 (en) 2012-03-14
US20150037187A1 (en) 2015-02-05
GB2498807A (en) 2013-07-31
EP2809880A2 (en) 2014-12-10

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